Home / 89,719.60-134,579.40-68,724.40

Finding the Fourth Proportional to 89,719.60, 134,579.40 and 68,724.40

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Solution

The fourth proportional to 89,719.60, 134,579.40 and 68,724.40 is: 103,086.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,719.60 : 134,579.40 = 68,724.40 : x
  2. Step 2: Convert to fraction form
    89,719.60/134,579.40 = 68,724.40/x
  3. Step 3: Cross multiply
    89,719.60x = 134,579.40 × 68,724.40
  4. Step 4: Simplify right side
    89,719.60x = 9,248,888,517.36
  5. Step 5: Solve for x
    x = 9,248,888,517.36/89,719.60
  6. Step 6: Final answer
    x = 103,086.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.